Net volume = (sprinkler + hose) × duration: a worked OH2 example, minimum volumes for every hazard class and the extras that make up the gross tank size.
Fire Water Tank Sizing: Sprinklers plus Hose Streams Read More »
How to pick K5.6, K8.0 or K11.2 from the density and spacing: one formula, one worked OH2 example and a pressure table for every hazard class.
Choosing the Sprinkler K-Factor Read More »
A quick UPS sizing method that checks kVA, kW and battery autonomy separately, with a 40 kW, 10-minute example and the rules of thumb behind it.
UPS Sizing: kVA, kW and Battery Autonomy in Practice Read More »
Size a building’s cold water storage tank from users, daily demand and storage period, then convert usable volume to a real two-compartment tank.
Water Storage Tank Sizing for Buildings Read More »
Maximum hanger spacing for sprinkler pipe, unsupported end and armover limits, and a worked hanger load check using 5 × water-filled weight + 115 kg.
Sprinkler Pipe Hanger Spacing and Support Rules Read More »
Size roof outlets, downpipes and overflows with the EN 12056-3 method Q = r × A × C, with a worked flat-roof example and a quick flow table.
Roof Rainwater Drainage Sizing (EN 12056-3) Read More »
Size commercial kitchen hood exhaust from hood length and appliance duty, then balance it with make-up air and size the grease duct, with a worked 4 m heavy-duty wall canopy at 2480 L/s.
Commercial Kitchen Hood Exhaust Airflow: Quick Sizing Read More »
Size a commercial kitchen grease separator with EN 1825-2 (NS = Qs × ft × fd × fr) or the US sink drain-down method, with worked examples and layout rules.
Grease Interceptor (Grease Trap) Sizing Read More »
Size a standby generator from the running load, then check the largest motor start; a worked example shows how a soft starter saves about 300 kVA of generator.
Standby Generator Sizing: A Quick Method That Works Read More »
Size a heating expansion vessel in five steps from system volume, maximum temperature, static height and safety valve setting, with a worked 200 kW example, a quick house check and the site settings that matter.
Expansion Vessel Sizing for Heating Systems Read More »